SCLS303E January   1996  – September 2022 SN54HC640 , SN74HC640

PRODUCTION DATA  

  1. 1 Features
  2. 2 Description
  3. 3 Revision History
  4. 4 Pin Configuration and Functions
  5. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions (1)
    3. 5.3 Thermal Information
    4. 5.4 Electrical Characteristics
    5. 5.5 Switching Characteristics
    6. 5.6 Operating Characteristics
  6. 6 Parameter Measurement Information
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Device Functional Modes
  8. 8 Power Supply Recommendations
  9. 9 Layout
    1. 9.1 Layout Guidelines
  10. 10Device and Documentation Support
    1. 10.1 Documentation Support
      1. 10.1.1 Related Documentation
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • J|20
Thermal pad, mechanical data (Package|Pins)
Orderable Information

2 Description

The SNx4HC640 is an octal bus transceiver with 3-state outputs. All eight channels are controlled by the direction (DIR) pin and output enable OE pin.

Device Information(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
SN54HC640 J (CDIP, 20) 26.92 mm × 6.92 mm
SN74HC640 DW (SOIC, 20) 12.80 mm × 7.50 mm
N (PDIP, 20) 25.40 mm × 6.35 mm
NS (SO, 20) 15.00 mm × 5.30 mm
PW (TSSOP, 20) 4.40 mm × 6.50 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
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